2/25/2017

This task may be pretty unique but on one of the project I needed to get Incoming Email settings for all document libraries using JavaScript only.
After brief investigation I found that there are no any related properties in CSOM's/JSOM's List object.
But you can alway get list's Schema XML and get practically any information from there. Needed property is stored as attribute and has name EmailAlias.
So, the solution was pretty simple: